Bandwidth Part Operations for IDLE and INACTIVE States

2. The method of claim 1, wherein the physical layer configuration is a dedicated physical layer configuration corresponding uniquely to the BWP active just prior to said switching, among the two or more previously configured BWPs, and wherein said retaining comprises retaining a dedicated physical layer configuration for each of two or more of the previously configured bandwidth parts, including the BWP active just prior to said switching.

3. The method of claim 1, wherein the physical layer configuration is a common physical layer configuration corresponding to two or more of the previously configured BWPs, including the BWP active just prior to said switching.

6. The method of claim 1, wherein the wireless device changes cells from a source cell to a target cell, while in the inactive RRC state, and wherein said retaining is responsive to receiving, from a wireless network node operating the target cell, an indication to keep the physical layer configuration corresponding to the BWP.

10. The wireless device of claim 9, wherein the physical layer configuration is a dedicated physical layer configuration corresponding uniquely to the BWP active just prior to said switching, among the two or more previously configured BWPs.

11. The wireless device of claim 10, wherein the processing circuitry is configured to retain the physical layer configuration by retaining a dedicated physical layer configuration for each of two or more of the previously configured BWPs, including the BWP active just prior to said switching.

12. The wireless device of claim 9, wherein the physical layer configuration is a common physical layer configuration corresponding to two or more of the previously configured BWPs, including the BWP active just prior to said switching.

14. The wireless device of claim 13, wherein said use of the physical layer configuration corresponding to the BWP active just prior to said switching is conditioned upon not receiving, while in the inactive state, system information (SI) indicating a change in the dedicated physical layer configuration for the BWP active just prior to said switching.

18. The wireless device of claim 9, wherein the processing circuitry is configured to perform said retaining responsive to receiving, from a wireless network node, an indication to keep the physical layer configuration corresponding to the BWP.

19. The wireless device of claim 18, wherein the wireless device changes cells from a source cell to a target cell, while in the inactive RRC state, and wherein the indication is received from a network node operating the target cell.

20. The wireless device of claim 18, wherein the wireless device changes cells from a source cell to a target cell, while in the inactive RRC state, and wherein the indication is received from a network node operating the source cell.

21. The wireless device of claim 18, wherein said indication is received in an RRC suspend message.

24. The network node of claim 23, wherein the processing circuitry is configured to perform the sending in conjunction with transitioning the wireless device to the inactive RRC state.

25. The network node of claim 23, wherein the processing circuitry is configured to send the indication via broadcasted system information (SI).